question_answer

What height of water column produces the same pressure as a 760 mm high column of Hg?                                       

Answer:

                Pressure exerted by h height of water column \[=\]Pressure exerted by 760 mm of Hg column \[\therefore \]\[h\times 1000\times 9.8=0.760\times 13.6\times {{10}^{3}}\times 9.8\] \[[P=h\rho g]\] or  \[h=\frac{0.760\times 13.6\times {{10}^{3}}}{1000}=\mathbf{10}\mathbf{.336m}\]